3rd Infantry Divison Helmet Opinions

Article about: Bought this helmet off ebay and would like some opinions on the insignia. It's a rear seam schlueter with od7 straps. The liner is a Firestone with green painted A-washers and a green buckle

It looks good to me. and under the circumstances it was not sold to fool by the sounds of it.
If I were you I would contact the seller politely and ask them a few questions about it, you may find out who the original owner was with a bit of luck. I've did this before explaining that I like to keep any history with the item in question. some people are kind enough to reply, some do not.
best of luck
Rod